[Improvement] Show the real spells used by NPC

[BarbzYHOOL]

1. Replace the tab "Used by" in the spell category by "Available when mind controlled for".
   Replace the tab "Abilities" in the NPC category by "Spells when mind controlled".

Because the spells listed there are only for. They are extracted from the "creature_template" table.
Maybe they are a relic of the past, or simply incomplete but they don't show the real spells from the NPC.

You can just try possessing Azuregos, he will have the same spells found on aowow, but if you fight him he will use different spells. His spells are defined into the core directly (c++) but for most NPCs it's in smart_scripts

2. List which spells are used by the NPC by querying the "smart_scripts" table (when action_type = 11 = cast spell).

Note : not all spells are listed there, because some are directly coded into the core (c++).

[Killyana]

We already have this implemented, for example: https://tcubuntu.northeurope.cloudapp.azure.com/aowow/?npc=15981

Even if the npc don't have any spell on:

SELECT * FROM   creature_template_spell  WHERE CreatureID IN (15981);

Spells from SAI are in: Abilities

[Sarjuuk]

added in 54b20c3
most of it was already in place.

[BarbzYHOOL]

nice